But another kernel oops is just found on one mustang with vivid: Call trace: Unable to handle kernel NULL pointer dereference at virtual address 00000018 pgd = ffffffc105652000 [00000018] *pgd=000000432d9dc003Unable to handle kernel NULL pointer dereference at virtual address 00000030 pgd = ffffffc1b8d49000 [00000030] *pgd=00000041b8d4a003, *pud=00000041b8d4a003, *pmd=0000000000000000 Internal error: Oops: 96000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 15416 Comm: stress-ng-sysin Tainted: G W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) task: ffffffc233cf0ac0 ti: ffffffc132094000 task.ti: ffffffc132094000 PC is at thread_group_cputime+0x90/0x154 LR is at thread_group_cputime+0x30/0x154 pc : [<ffffffc0000d0cf4>] lr : [<ffffffc0000d0c94>] pstate: 00000145 sp : ffffffc132097d90 x29: ffffffc132097d90 x28: ffffffc132094000 x27: ffffffc233cf0ac0 x26: ffffffc02cc24154 x25: 0000000000000000 x24: 0000000000000000 x23: 0000000000000000 x22: ffffffc02cc23fc0 x21: 0000000000000000 x20: fffffffffffffc48 x19: ffffffc132097e38 x18: 0000000000000000 x17: 0000007fa836cff0 x16: ffffffc0000bb030 x15: 0024167618000000 x14: 0000007fa82d3624 x13: 6f6d2c6b32393237 x12: 0000000000000000 x11: 0000000000000006 x10: 0101010101010101 x9 : fefeff7ea7306a2f x8 : 0000000000000099 x7 : 746e756f6d203631 x6 : 0000007fc0aa71c3 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffffffc02cc23fd0
Process stress-ng-sysin (pid: 15416, stack limit = 0xffffffc132094058) Stack: (0xffffffc132097d90 to 0xffffffc132098000) 7d80: 32097e00 ffffffc1 000d0ed0 ffffffc0 7da0: 32097e80 ffffffc1 33cf0ac0 ffffffc2 ffffffff ffffffff a836cffc 0000007f 7dc0: 60000000 00000000 00000015 00000000 0000011a 00000000 00000099 00000000 7de0: 007f2000 ffffffc0 001e7742 00000000 00000000 00000000 00000000 00000000 7e00: 32097e50 ffffffc1 000bafd8 ffffffc0 32097eb0 ffffffc1 0044cf58 00000000 7e20: 00000000 00000000 32097e88 ffffffc1 c0aaaa80 0000007f 00000000 00000000 7e40: 00000000 00000000 00000000 00000000 32097e90 ffffffc1 000bb04c ffffffc0 7e60: c0aaab20 0000007f 0044cf58 00000000 ffffffff ffffffff 000617db 00000000 7e80: 001e7746 00000000 001e7742 00000000 c0aaaa80 0000007f 00086470 ffffffc0 7ea0: 00000000 00000000 00001026 00000000 00000000 00000000 00000000 00000000 7ec0: 00000000 00000000 00000000 00000000 c0aaab20 0000007f c0aaabb0 0000007f 7ee0: c0aaab20 0000007f 00000000 00000000 00000000 00000000 00000000 00000000 7f00: c0aa71c3 0000007f 6d203631 746e756f 00000099 00000000 a7306a2f fefeff7e 7f20: 01010101 01010101 00000006 00000000 00000000 00000000 32393237 6f6d2c6b 7f40: a82d3624 0000007f 18000000 00241676 0044c5e8 00000000 a836cff0 0000007f 7f60: 00000000 00000000 c0aaaca0 0000007f 0044cf58 00000000 c0aaaca0 0000007f 7f80: 00000000 00000000 0044c000 00000000 a82b3370 0000007f 00000010 00000000 7fa0: 00000000 00000000 c0aab168 0000007f 0044c000 00000000 c0aaaa80 0000007f 7fc0: 0042068c 00000000 c0aaaa80 0000007f a836cffc 0000007f 60000000 00000000 7fe0: c0aaab20 0000007f 00000099 00000000 49494949 49494949 49494949 49494949 Call trace: [<ffffffc0000d0cf4>] thread_group_cputime+0x90/0x154 [<ffffffc0000d0ecc>] thread_group_cputime_adjusted+0x1c/0x44 [<ffffffc0000bafd4>] do_sys_times+0x28/0x84 [<ffffffc0000bb048>] SyS_times+0x18/0x78 Code: 54000081 14000015 f9400261 f9400662 (f941f684) ---[ end trace d68092dda907ca24 ]--- Kernel panic - not syncing: Fatal exception CPU7: stopping CPU: 7 PID: 18484 Comm: stress-ng-kill Tainted: G D W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) Call trace: [<ffffffc00008a348>] dump_backtrace+0x0/0x12c [<ffffffc00008a484>] show_stack+0x10/0x1c [<ffffffc0005a376c>] dump_stack+0x88/0xd8 [<ffffffc000092e54>] handle_IPI+0x184/0x194 [<ffffffc00008245c>] gic_handle_irq+0x74/0x7c Exception stack(0xffffffc32c0dbeb0 to 0xffffffc32c0dbfd0) bea0: 00000000 00000000 00004834 00000000 bec0: ffffffff ffffffff a8301cc8 0000007f 00000000 00000000 0000000a 00000000 bee0: 00000000 00000000 00000008 00000000 00000008 00000000 000003e8 00000000 bf00: c0aaae88 0000007f 00000000 00000000 00000081 00000000 00000000 00000000 bf20: 01010101 01010101 00000006 00000000 00000000 00000000 00000000 00000000 bf40: a82d22e4 0000007f 88000000 00080051 0044c180 00000000 a8301cc0 0000007f bf60: 00000000 00000000 a8292c58 0000007f 00004834 00000000 0044c000 00000000 bf80: 00000000 00000000 0044c000 00000000 0044c000 00000000 00430ad8 00000000 bfa0: 00000005 00000000 c0aab168 0000007f 0000001b 00000000 c0aaaf20 0000007f bfc0: 004180c8 00000000 c0aaaf20 0000007f CPU6: stopping CPU: 6 PID: 18493 Comm: stress-ng-minco Tainted: G D W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) Call trace: [<ffffffc00008a348>] dump_backtrace+0x0/0x12c [<ffffffc00008a484>] show_stack+0x10/0x1c [<ffffffc0005a376c>] dump_stack+0x88/0xd8 [<ffffffc000092e54>] handle_IPI+0x184/0x194 [<ffffffc00008245c>] gic_handle_irq+0x74/0x7c Exception stack(0xffffffc3bffdfeb0 to 0xffffffc3bffdffd0) fea0: 00000000 00000000 0000000c 00000000 fec0: ffffffff ffffffff a83954e8 0000007f fffffff4 ffffffff 00001000 00000000 fee0: c0aab020 0000007f 0000000c 00000000 00419f0c 00000000 000003e8 00000000 ff00: a8527000 0000007f 00000000 00000000 000000e8 00000000 002148c8 00000000 ff20: 01010101 01010101 00000006 00000000 00000018 00000000 e8000000 00000003 ff40: a82d305c 0000007f 00000000 00080557 0044c308 00000000 a83954e0 0000007f ff60: 00000000 00000000 ec264000 00000000 0000000c 00000000 a851a710 0000007f ff80: 00001000 00000000 0044cf58 00000000 00000064 00000000 0044c000 00000000 ffa0: 00000020 00000000 0044c000 00000000 c0aab168 0000007f c0aaaf90 0000007f ffc0: 00419fc4 00000000 c0aaaf90 0000007f CPU4: stopping CPU: 4 PID: 32651 Comm: stress-ng-sigfp Tainted: G D W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) Call trace: [<ffffffc00008a348>] dump_backtrace+0x0/0x12c [<ffffffc00008a484>] show_stack+0x10/0x1c [<ffffffc0005a376c>] dump_stack+0x88/0xd8 [<ffffffc000092e54>] handle_IPI+0x184/0x194 [<ffffffc00008245c>] gic_handle_irq+0x74/0x7c Exception stack(0xffffffc2009d7d90 to 0xffffffc2009d7eb0) 7d80: 00000000 00000000 c0aaaf90 0000007f 7da0: 009d7ed0 ffffffc2 00086454 ffffffc0 00000008 00000000 c0aaae20 0000007f 7dc0: 00000000 00000000 00000008 00000000 00000008 00000000 5a3baee7 26486b85 7de0: c0aaaeb8 0000007f 00000000 00000000 00000086 00000000 00000000 00000000 7e00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 7e20: 00000000 00000000 80000000 001ece7e a8456000 0000007f a834af80 0000007f 7e40: 00000000 00000000 00000000 00000000 c0aaaf90 0000007f ffffffff ffffffff 7e60: a84413e8 0000007f 00000000 00000000 00000015 00000000 0000011a 00000000 7e80: 00000086 00000000 007f2000 ffffffc0 009d4000 ffffffc2 c0aaadf0 0000007f 7ea0: a84413b8 0000007f 009d7ed0 ffffffc2 CPU3: stopping CPU: 3 PID: 24079 Comm: stress-ng-flock Tainted: G D W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) Call trace: [<ffffffc00008a348>] dump_backtrace+0x0/0x12c [<ffffffc00008a484>] show_stack+0x10/0x1c [<ffffffc0005a376c>] dump_stack+0x88/0xd8 [<ffffffc000092e54>] handle_IPI+0x184/0x194 [<ffffffc00008245c>] gic_handle_irq+0x74/0x7c Exception stack(0xffffffc228287c90 to 0xffffffc228287db0) 7c80: 28287e58 ffffffc2 28287e58 ffffffc2 7ca0: 28287dd0 ffffffc2 001c6bdc ffffffc0 28287e58 ffffffc2 28287e58 ffffffc2 7cc0: 15c540db 00000001 b1369258 ffffffc1 fff7f480 ffffffc3 b13693c0 ffffffc1 7ce0: 00000000 00000000 00000000 00000000 b1369300 ffffffc1 00000000 00000000 7d00: 01010101 01010101 00000006 00000000 00000038 00000000 e8000000 00000003 7d20: a82d2498 0000007f ac000000 0007ff47 000cce58 ffffffc0 a8384150 0000007f 7d40: 00000000 00000000 28287e58 ffffffc2 28287e58 ffffffc2 3fc89540 ffffffc2 7d60: 00000024 00000000 b68f7600 ffffffc1 0094a148 ffffffc0 b1369240 ffffffc1 7d80: 00000001 00000000 b1369300 ffffffc1 485ea108 ffffffc0 28287dd0 ffffffc2 7da0: 001c76a8 ffffffc0 28287dd0 ffffffc2 [<ffffffc000085da4>] el1_irq+0x64/0xd8 [<ffffffc0001c76a4>] flock_lock_file_wait+0x178/0x2c0 [<ffffffc0001c84b0>] SyS_flock+0x190/0x19c CPU0: stopping CPU: 0 PID: 18115 Comm: stress-ng-pipe Tainted: G D W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) Call trace: [<ffffffc00008a348>] dump_backtrace+0x0/0x12c [<ffffffc00008a484>] show_stack+0x10/0x1c [<ffffffc0005a376c>] dump_stack+0x88/0xd8 [<ffffffc000092e54>] handle_IPI+0x184/0x194 [<ffffffc00008245c>] gic_handle_irq+0x74/0x7c Exception stack(0xffffffc2de79fb30 to 0xffffffc2de79fc50) fb20: 00000200 00000000 00000000 00000000 fb40: de79fc70 ffffffc2 005ae628 ffffffc0 fffffff8 ffffffff c0aab020 0000007f fb60: fe9a5a46 ffffffff 00000030 00000000 00000008 00000000 00000000 00000080 fb80: 2d7e477a ffffffc0 76757473 7a797877 7e7d7c7b 8281807f 46454443 4a494847 fba0: 4e4d4c4b 5251504f 56555453 5a595857 5e5d5c5b 6261605f 66656463 6a696867 fbc0: 6e6d6c6b 7271706f 74000000 002e387a 001819fc ffffffc0 a843fe30 0000007f fbe0: 00000000 00000000 00000200 00000000 00000000 00000000 de79fda0 ffffffc2 fc00: bfd5c300 ffffffc3 c0aaae28 0000007f 00000200 00000000 c0b06280 ffffffbe fc20: 2c18a000 ffffffc0 007e8000 ffffffc0 2c18a000 ffffffc0 de79fc70 ffffffc2 fc40: 0014d700 ffffffc0 de79fc70 ffffffc2 [<ffffffc000085da4>] el1_irq+0x64/0xd8 [<ffffffc000188d7c>] pipe_write+0xc0/0x3e4 [<ffffffc000180904>] new_sync_write+0x84/0xc8 [<ffffffc000180fc8>] vfs_write+0x9c/0x1f0 [<ffffffc000181a3c>] SyS_write+0x40/0xa0 CPU2: stopping CPU: 2 PID: 18076 Comm: stress-ng-cache Tainted: G D W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) Call trace: [<ffffffc00008a348>] dump_backtrace+0x0/0x12c [<ffffffc00008a484>] show_stack+0x10/0x1c [<ffffffc0005a376c>] dump_stack+0x88/0xd8 [<ffffffc000092e54>] handle_IPI+0x184/0x194 [<ffffffc00008245c>] gic_handle_irq+0x74/0x7c Exception stack(0xffffffc3c6997eb0 to 0xffffffc3c6997fd0) 7ea0: 00000000 00000000 a827f778 0000007f 7ec0: ffffffff ffffffff 00408784 00000000 001f35d4 00000000 00000045 00000000 7ee0: 00000001 00000000 00000208 00000000 0064d000 00000000 0000011f 00000000 7f00: a8527000 0000007f 00000000 00000000 0000007a 00000000 000cb419 00000000 7f20: 00014a2c 00000000 00000006 00000000 00000018 00000000 e8000000 00000003 7f40: a82d2600 0000007f 94000000 00034feb 0044c508 00000000 a8384258 0000007f 7f60: 00000000 00000000 00009069 00000000 a827f778 0000007f 00000002 00000000 7f80: c0aaafa8 0000007f 0044c000 00000000 001fffff 00000000 a4370d90 00000000 7fa0: 0044c000 00000000 a8078000 0000007f 0044cf58 00000000 c0aaaf20 0000007f 7fc0: 00408820 00000000 c0aaaf20 0000007f , *pud=000000432d9dc003, *pmd=0000000000000000 Internal error: Oops: 96000006 [#2] PREEMPT SMP Modules linked in: CPU: 5 PID: 15407 Comm: stress-ng-sigfd Tainted: G D W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) task: ffffffc0bdeaa040 ti: ffffffc11a2cc000 task.ti: ffffffc11a2cc000 PC is at __dequeue_signal+0x8c/0x1ac LR is at dequeue_signal+0x78/0x158 pc : [<ffffffc0000b4d38>] lr : [<ffffffc0000b4ed0>] pstate: a00001c5 sp : ffffffc11a2cfc50 x29: ffffffc11a2cfc50 x28: 0000000000000000 x27: 0000007fc0aaafb8 x26: 0000007fc0aaafa8 x25: 0000000000000001 x24: ffffffc11a2cfd78 x23: 0000000000000001 x22: 0000000000000000 x21: 0000000000000000 x20: 000000000000000a x19: ffffffc02cc26640 x18: 0000000000000000 x17: 0000007fa830295c x16: ffffffc0000b8800 x15: 00241dc3dc000000 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : ffffffc11a2cfaf0 x8 : ffffffc0bdeaa580 x7 : ffffffc3c5852a28 x6 : ffffffc0005b6420 x5 : 0000000000000000 x4 : 0000000000800000 SMP: failed to stop secondary CPUs ---[ end Kernel panic - not syncing: Fatal exception x3 : 0000000000000000 x2 : ffffffc11a2cfda0 x1 : 0000000000000000 x0 : 0000000000000009 Process stress-ng-sigfd (pid: 15407, stack limit = 0xffffffc11a2cc058) Stack: (0xffffffc11a2cfc50 to 0xffffffc11a2d0000) fc40: 1a2cfc90 ffffffc1 000b4ed0 ffffffc0 fc60: 00000000 00000000 bdeaa040 ffffffc0 1a2cfda0 ffffffc1 119a7640 ffffffc1 fc80: 1a2cfc90 ffffffc1 000b4ee0 ffffffc0 1a2cfce0 ffffffc1 001c1354 ffffffc0 fca0: 1a2cc000 ffffffc1 1a2cfda0 ffffffc1 c0aaafb4 0000007f 119a7640 ffffffc1 fcc0: 00000001 00000000 1a2cfda0 ffffffc1 1a2cfce0 ffffffc1 001c1328 ffffffc0 fce0: 1a2cfe20 ffffffc1 001817d0 ffffffc0 1f4a2c00 ffffffc0 1a2cfec8 ffffffc1 fd00: c0aaafa8 0000007f a843fe78 0000007f 60000000 00000000 00000015 00000000 fd20: 0000011a 00000000 0000003f 00000000 007f2000 ffffffc0 1a2cc000 ffffffc1 fd40: cec070d0 ffffffc3 00020000 00000000 3f5550cc ffffff80 000cd9dc ffffffc0 fd60: 3f55504c ffffff80 0000003f 00000000 007f2000 ffffffc0 00000000 00000000 fd80: bdeaa040 ffffffc0 000cd9dc ffffffc0 01873158 ffffffc0 01873158 ffffffc0 fda0: 1f4a2c00 ffffffc0 00000000 00000000 1f4a2c10 ffffffc0 00000000 00000001 fdc0: 00000000 00000000 00000000 00000000 1a2cfe00 ffffffc1 00180ea0 ffffffc0 fde0: 00000080 00000000 1f4a2c00 ffffffc0 00000000 00000000 a843fe78 0000007f fe00: 1a2cfe30 ffffffc1 0018186c ffffffc0 1f4a2c00 ffffffc0 1a2cfec8 ffffffc1 fe20: 1a2cfe30 ffffffc1 00181888 ffffffc0 1a2cfe80 ffffffc1 001819a0 ffffffc0 fe40: 1f4a2c00 ffffffc0 1f4a2c00 ffffffc0 ffffffff ffffffff a843fe78 0000007f fe60: 60000000 00000000 00181978 ffffffc0 00000000 00000000 00000000 00000000 fe80: c0aaaed0 0000007f 00086470 ffffffc0 00000000 00000000 0044cf58 00000000 fea0: ffffffff ffffffff 00086250 ffffffc0 00000080 00000000 c0aaafa8 0000007f fec0: 00000000 00000000 00000000 00000000 00000003 00000000 c0aaafa8 0000007f fee0: 00000080 00000000 00000001 00000000 00000000 00000000 a84139e8 0000007f ff00: 00000000 00000000 a8415000 0000007f 0000003f 00000000 ffffc3d1 00000000 ff20: 01010101 01010101 00000006 00000000 00000018 00000000 e8000000 00000003 ff40: a8430c0c 0000007f dc000000 00241dc3 00000000 00000000 a843fea0 0000007f ff60: 00000000 00000000 00000000 00000000 0044cf58 00000000 00000003 00000000 ff80: a82ab570 0000007f 0044c000 00000000 0044c000 00000000 00007c29 00000000 ffa0: c0aab168 0000007f 0044cf58 00000000 00000037 00000000 c0aaaed0 0000007f ffc0: 0041f068 00000000 c0aaaed0 0000007f a843fe78 0000007f 60000000 00000000 ffe0: 00000003 00000000 0000003f 00000000 00000000 00000000 00000000 00000000 Call trace: [<ffffffc0000b4d38>] __dequeue_signal+0x8c/0x1ac [<ffffffc0000b4ecc>] dequeue_signal+0x74/0x158 [<ffffffc0001c1350>] signalfd_read+0x2f0/0x410 [<ffffffc0001817cc>] __vfs_read+0x14/0x50 [<ffffffc000181884>] vfs_read+0x7c/0x154 [<ffffffc00018199c>] SyS_read+0x40/0xa0 Code: 14000004 f9400021 eb01027f 54000120 (b9401823) CPU5: stopping CPU: 5 PID: 15407 Comm: stress-ng-sigfd Tainted: G D W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) Call trace: [<ffffffc00008a348>] dump_backtrace+0x0/0x12c [<ffffffc00008a484>] show_stack+0x10/0x1c [<ffffffc0005a376c>] dump_stack+0x88/0xd8 [<ffffffc000092e54>] handle_IPI+0x184/0x194 [<ffffffc00008245c>] gic_handle_irq+0x74/0x7c Exception stack(0xffffffc11a2cf6f0 to 0xffffffc11a2cf810) f6e0: 0083a000 ffffffc0 00000000 00000000 f700: 1a2cf830 ffffffc1 005a8594 ffffffc0 0083a100 ffffffc0 00000002 00000000 f720: 00000280 00000000 00000080 00000000 00809eb8 ffffffc0 003ac4f4 ffffffc0 f740: 00000022 00000000 007e85c0 ffffffc0 32313030 62282030 00000ccb 00000000 f760: 00000cca 00000000 00000000 00000000 00000006 00000000 00000038 00000000 f780: fffffffc 0fffffff dc000000 00241dc3 000b8800 ffffffc0 a830295c 0000007f f7a0: 00000000 00000000 0083a000 ffffffc0 00000000 00000000 006fe6f8 ffffffc0 f7c0: 1a2cfb30 ffffffc1 1a2cc000 ffffffc1 bdeaa040 ffffffc0 96000006 00000000 f7e0: c0aaafa8 0000007f c0aaafb8 0000007f 00000000 00000000 1a2cf830 ffffffc1 f800: 0008a558 ffffffc0 1a2cf830 ffffffc1 [<ffffffc000085da4>] el1_irq+0x64/0xd8 [<ffffffc00008a554>] die+0xc4/0x1b4 [<ffffffc00059fff8>] __do_kernel_fault.part.5+0x70/0x84 [<ffffffc000096df8>] do_page_fault+0x2d4/0x334 [<ffffffc000096f14>] do_translation_fault+0xbc/0xf0 [<ffffffc000082294>] do_mem_abort+0x38/0x9c Exception stack(0xffffffc11a2cfa90 to 0xffffffc11a2cfbb0) fa80: 2cc26640 ffffffc0 0000000a 00000000 faa0: 1a2cfc50 ffffffc1 000b4d38 ffffffc0 bdeaa040 ffffffc0 1a2cc000 ffffffc1 fac0: 1a2cfad0 ffffffc1 000c92f0 ffffffc0 1a2cfb20 ffffffc1 005a4b04 ffffffc0 fae0: ef040ac0 ffffffc0 fff96380 ffffffc3 bdeaa040 ffffffc0 1a2cc000 ffffffc1 fb00: 007d3380 ffffffc0 007d3380 ffffffc0 1a2cfb20 ffffffc1 ef040ac0 ffffffc0 fb20: 1a2cfcd0 ffffffc1 005a4f98 ffffffc0 00000009 00000000 00000000 00000000 fb40: 1a2cfda0 ffffffc1 00000000 00000000 00800000 00000000 00000000 00000000 fb60: 005b6420 ffffffc0 c5852a28 ffffffc3 bdeaa580 ffffffc0 1a2cfaf0 ffffffc1 fb80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 fba0: 00000000 00000000 dc000000 00241dc3 [<ffffffc000085c24>] el1_da+0x14/0x70 [<ffffffc0000b4ecc>] dequeue_signal+0x74/0x158 [<ffffffc0001c1350>] signalfd_read+0x2f0/0x410 [<ffffffc0001817cc>] __vfs_read+0x14/0x50 [<ffffffc000181884>] vfs_read+0x7c/0x154 [<ffffffc00018199c>] SyS_read+0x40/0xa0 Unable to handle kernel NULL pointer dereference at virtual address 00000008 pgd = ffffffc1b8d49000 [00000008] *pgd=00000041b8d4a003, *pud=00000041b8d4a003, *pmd=0000000000000000 Internal error: Oops: 96000006 [#3] PREEMPT SMP Modules linked in: CPU: 1 PID: 15416 Comm: stress-ng-sysin Tainted: G D W 3.19.8-ckt1+ #40 Hardware name: APM X-Gene Mustang board (DT) task: ffffffc233cf0ac0 ti: ffffffc132094000 task.ti: ffffffc132094000 PC is at rb_insert_color+0x10/0x150 LR is at timerqueue_add+0x70/0xc4 pc : [<ffffffc00032c894>] lr : [<ffffffc00032daec>] pstate: 200001c5 sp : ffffffc1320975a0 x29: ffffffc1320975a0 x28: ffffffc3fff60c78 x27: 7fffffffffffffff x26: 0000000000000003 x25: 00000e7e6ac58f7c x24: 0000000000000001 x23: 7fffffffffffffff x22: 0000000000000001 x21: ffffffc3fff60b40 x20: ffffffc3fff60b90 x19: ffffffc3fff61050 x18: 0000000000000000 x17: 0000007fa836cff0 x16: ffffffc0000bb030 x15: 0024167618000000 x14: 0ffffffffffffffe x13: 0000000000000038 x12: ffffffc0007f8000 x11: ffffffc00083c000 x10: 0000000000000000 x9 : 00000000000b2964 x8 : 0000000000217124 x7 : ffffffc02cc23c08 x6 : 00000e7f5930b600 x5 : 0000000000000010 x4 : 0000000000000008 x3 : ffffffc02cc23c08 x2 : 0000000000000000 x1 : ffffffc3fff60b90 x0 : ffffffc3fff61050 Process stress-ng-sysin (pid: 15416, stack limit = 0xffffffc132094058) Stack: (0xffffffc1320975a0 to 0xffffffc132098000) 75a0: 320975d0 ffffffc1 000f42b0 ffffffc0 fff61050 ffffffc3 fff60b80 ffffffc3 75c0: fff60b40 ffffffc3 00000001 00000000 320975f0 ffffffc1 000f464c ffffffc0 75e0: fff61050 ffffffc3 fff60b80 ffffffc3 32097620 ffffffc1 000f4cb0 ffffffc0 7600: fff60b40 ffffffc3 6ac58f7c 00000e7e 00000000 00000000 fff60b40 ffffffc3 7620: 320976a0 ffffffc1 004a7ff8 ffffffc0 cf004600 ffffffc3 0080a1c8 ffffffc0 7640: cf00d380 ffffffc3 00000002 00000000 80000145 00000000 0083a8d8 ffffffc0 7660: 96000006 00000000 00000020 00000000 00010000 00000000 00000007 00000000 7680: 007d2000 ffffffc0 6ac58f7c 00000e7e fff60c38 ffffffc3 fff60bf8 ffffffc3 76a0: 320976b0 ffffffc1 000e8694 ffffffc0 320976f0 ffffffc1 000e487c ffffffc0 76c0: 00000002 00000000 00000000 00000000 00000001 00000000 00040010 ffffff80 76e0: 320976f0 ffffffc1 000e4868 ffffffc0 32097710 ffffffc1 000e4b8c ffffffc0 7700: 007d2000 ffffffc0 000e4b60 ffffffc0 32097750 ffffffc1 0008241c ffffffc0 7720: 32097780 ffffffc1 0004000c ffffff80 007eadc8 ffffffc0 0004000c ffffff80 7740: cf010000 ffffffc3 0000001d 00000000 320978a0 ffffffc1 00085da8 ffffffc0 7760: 00000022 00000000 000846c0 00000000 320978a0 ffffffc1 00325b60 ffffffc0 7780: 0000c350 00000000 00002b57 00000000 0419f0b0 000000ba 00000000 00000000 77a0: 00000000 00000000 00000000 00000000 0088a358 ffffffc0 00000000 00000000 77c0: 0088a358 ffffffc0 000b2964 00000000 00000000 00000000 0083c000 ffffffc0 77e0: 007f8000 ffffffc0 00000038 00000000 fffffffe 0fffffff 18000000 00241676 7800: 000bb030 ffffffc0 a836cff0 0000007f 00000000 00000000 00000022 00000000 7820: 000846c0 00000000 00084788 00000000 00000001 00000000 0083a8d8 ffffffc0 7840: 0083a8d8 ffffffc0 96000006 00000000 00000020 00000000 00010000 00000000 7860: 00000007 00000000 320978a0 ffffffc1 00325b98 ffffffc0 320978a0 ffffffc1 7880: 00325b60 ffffffc0 80000145 00000000 005a0290 ffffffc0 20000145 00000000 78a0: 320978b0 ffffffc1 005a0294 ffffffc0 32097980 ffffffc1 0008a638 ffffffc0 78c0: 0083a000 ffffffc0 00000000 00000000 006fe6f8 ffffffc0 32097c70 ffffffc1 78e0: 32094000 ffffffc1 33cf0ac0 ffffffc2 96000006 00000000 32097950 ffffffc1 7900: 32097980 ffffffc1 32097980 ffffffc1 32097940 ffffffc1 ffffffc8 00000000 7920: 32097980 ffffffc1 32097980 ffffffc1 32097940 ffffffc1 ffffffc8 00000000 7940: 006fe6f8 ffffffc0 32097980 ffffffc1 00000000 00000000 00000000 00000000 7960: 00000000 00000000 00000000 00000000 0088775c ffffffc0 00000000 00000000 7980: 320979c0 ffffffc1 0059fffc ffffffc0 00000030 00000000 96000006 00000000 79a0: 568d0000 ffffffc2 32097c70 ffffffc1 009430f8 ffffffc0 568d0060 ffffffc2 79c0: 320979f0 ffffffc1 00096dfc ffffffc0 32097c70 ffffffc1 568d0000 ffffffc2 79e0: 00000030 00000000 33cf0ac0 ffffffc2 32097b80 ffffffc1 00096f18 ffffffc0 7a00: 00000030 00000000 32097c70 ffffffc1 96000006 00000000 32097c70 ffffffc1 7a20: 00000145 00000000 00000025 00000000 00000000 00000000 2cc24154 ffffffc0 7a40: 33cf0ac0 ffffffc2 32094000 ffffffc1 33cf0ac0 ffffffc2 32094000 ffffffc1 7a60: 32097a70 ffffffc1 000c92f0 ffffffc0 32097ac0 ffffffc1 005a4b04 ffffffc0 7a80: 32097aa0 ffffffc1 0019867c ffffffc0 ff452608 ffffffc0 0019871c ffffffc0 7aa0: 32097b00 ffffffc1 0018c37c ffffffc0 32097d40 ffffffc1 989df02a ffffffc0 7ac0: 32097be0 ffffffc1 cec46780 ffffffc3 32097ae0 ffffffc1 0018b084 ffffffc0 7ae0: 32097b20 ffffffc1 0018b120 ffffffc0 c5a87748 ffffffc3 00000081 00000000 7b00: 32097d40 ffffffc1 ffffff9c 00000000 32097b20 ffffffc1 0018b130 ffffffc0 7b20: 32097b50 ffffffc1 0018b1a4 ffffffc0 fefefeff fefefefe 989df02a ffffffc0 7b40: 32097d40 ffffffc1 00196908 ffffffc0 32097b60 ffffffc1 0018db10 ffffffc0 7b60: 32097c00 ffffffc1 0018e2ec ffffffc0 32097d40 ffffffc1 989df020 ffffffc0 7b80: 32097bc0 ffffffc1 00082298 ffffffc0 96000006 00000000 007f3548 ffffffc0 7ba0: 00000030 00000000 32097c70 ffffffc1 00000145 00000000 ff450480 ffffffc0 7bc0: 32097d90 ffffffc1 00085c28 ffffffc0 32097e38 ffffffc1 fffffc48 ffffffff 7be0: 32097d90 ffffffc1 000d0cf4 ffffffc0 32097c50 ffffffc1 0018e60c ffffffc0 7c00: 32097c30 ffffffc1 0018a4a0 ffffffc0 32097c30 ffffffc1 0018a4cc ffffffc0 7c20: 32097d40 ffffffc1 c8127d80 ffffffc3 32097c50 ffffffc1 0018e5b4 ffffffc0 7c40: 00000045 00000000 989df000 ffffffc0 32097ce0 ffffffc1 0018ec74 ffffffc0 7c60: 00000005 00000000 989df000 ffffffc0 2cc23fd0 ffffffc0 00000000 00000000 7c80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 7ca0: c0aa71c3 0000007f 6d203631 746e756f 00000099 00000000 a7306a2f fefeff7e 7cc0: 01010101 01010101 00000006 00000000 00000000 00000000 32393237 6f6d2c6b 7ce0: a82d3624 0000007f 18000000 00241676 000bb030 ffffffc0 a836cff0 0000007f 7d00: 00000000 00000000 32097e38 ffffffc1 fffffc48 ffffffff 00000000 00000000 7d20: 2cc23fc0 ffffffc0 00000000 00000000 00000000 00000000 00000000 00000000 7d40: 2cc24154 ffffffc0 33cf0ac0 ffffffc2 32094000 ffffffc1 32097d90 ffffffc1 7d60: 000d0c94 ffffffc0 32097d90 ffffffc1 000d0cf4 ffffffc0 00000145 00000000 7d80: c5b7e000 ffffffc3 00196908 ffffffc0 32097e00 ffffffc1 000d0ed0 ffffffc0 7da0: 32097e80 ffffffc1 33cf0ac0 ffffffc2 ffffffff ffffffff a836cffc 0000007f 7dc0: 60000000 00000000 00000015 00000000 0000011a 00000000 00000099 00000000 7de0: 007f2000 ffffffc0 001e7742 00000000 00000000 00000000 00000000 00000000 7e00: 32097e50 ffffffc1 000bafd8 ffffffc0 32097eb0 ffffffc1 0044cf58 00000000 7e20: 00000000 00000000 32097e88 ffffffc1 c0aaaa80 0000007f 00000000 00000000 7e40: 00000000 00000000 00000000 00000000 32097e90 ffffffc1 000bb04c ffffffc0 7e60: c0aaab20 0000007f 0044cf58 00000000 ffffffff ffffffff 000617db 00000000 7e80: 001e7746 00000000 001e7742 00000000 c0aaaa80 0000007f 00086470 ffffffc0 7ea0: 00000000 00000000 00001026 00000000 00000000 00000000 00000000 00000000 7ec0: 00000000 00000000 00000000 00000000 c0aaab20 0000007f c0aaabb0 0000007f 7ee0: c0aaab20 0000007f 00000000 00000000 00000000 00000000 00000000 00000000 7f00: c0aa71c3 0000007f 6d203631 746e756f 00000099 00000000 a7306a2f fefeff7e 7f20: 01010101 01010101 00000006 00000000 00000000 00000000 32393237 6f6d2c6b 7f40: a82d3624 0000007f 18000000 00241676 0044c5e8 00000000 a836cff0 0000007f 7f60: 00000000 00000000 c0aaaca0 0000007f 0044cf58 00000000 c0aaaca0 0000007f 7f80: 00000000 00000000 0044c000 00000000 a82b3370 0000007f 00000010 00000000 7fa0: 00000000 00000000 c0aab168 0000007f 0044c000 00000000 c0aaaa80 0000007f 7fc0: 0042068c 00000000 c0aaaa80 0000007f a836cffc 0000007f 60000000 00000000 7fe0: c0aaab20 0000007f 00000099 00000000 49494949 49494949 49494949 49494949 Call trace: [<ffffffc00032c894>] rb_insert_color+0x10/0x150 [<ffffffc0000f42ac>] enqueue_hrtimer+0x1c/0x60 [<ffffffc0000f4648>] __run_hrtimer.isra.34+0x70/0x104 [<ffffffc0000f4cac>] hrtimer_interrupt+0xcc/0x260 [<ffffffc0004a7ff4>] arch_timer_handler_phys+0x28/0x38 [<ffffffc0000e8690>] handle_percpu_devid_irq+0x74/0x98 [<ffffffc0000e4878>] generic_handle_irq+0x30/0x4c [<ffffffc0000e4b88>] __handle_domain_irq+0x5c/0xb4 [<ffffffc000082418>] gic_handle_irq+0x30/0x7c Exception stack(0xffffffc132097760 to 0xffffffc132097880) 7760: 00000022 00000000 000846c0 00000000 320978a0 ffffffc1 00325b60 ffffffc0 7780: 0000c350 00000000 00002b57 00000000 0419f0b0 000000ba 00000000 00000000 77a0: 00000000 00000000 00000000 00000000 0088a358 ffffffc0 00000000 00000000 77c0: 0088a358 ffffffc0 000b2964 00000000 00000000 00000000 0083c000 ffffffc0 77e0: 007f8000 ffffffc0 00000038 00000000 fffffffe 0fffffff 18000000 00241676 7800: 000bb030 ffffffc0 a836cff0 0000007f 00000000 00000000 00000022 00000000 7820: 000846c0 00000000 00084788 00000000 00000001 00000000 0083a8d8 ffffffc0 7840: 0083a8d8 ffffffc0 96000006 00000000 00000020 00000000 00010000 00000000 7860: 00000007 00000000 320978a0 ffffffc1 00325b98 ffffffc0 320978a0 ffffffc1 [<ffffffc000085da4>] el1_irq+0x64/0xd8 [<ffffffc0005a0290>] panic+0x210/0x220 [<ffffffc00008a634>] die+0x1a4/0x1b4 [<ffffffc00059fff8>] __do_kernel_fault.part.5+0x70/0x84 [<ffffffc000096df8>] do_page_fault+0x2d4/0x334 [<ffffffc000096f14>] do_translation_fault+0xbc/0xf0 [<ffffffc000082294>] do_mem_abort+0x38/0x9c Exception stack(0xffffffc132097bd0 to 0xffffffc132097cf0) 7bc0: 32097e38 ffffffc1 fffffc48 ffffffff 7be0: 32097d90 ffffffc1 000d0cf4 ffffffc0 32097c50 ffffffc1 0018e60c ffffffc0 7c00: 32097c30 ffffffc1 0018a4a0 ffffffc0 32097c30 ffffffc1 0018a4cc ffffffc0 7c20: 32097d40 ffffffc1 c8127d80 ffffffc3 32097c50 ffffffc1 0018e5b4 ffffffc0 7c40: 00000045 00000000 989df000 ffffffc0 32097ce0 ffffffc1 0018ec74 ffffffc0 7c60: 00000005 00000000 989df000 ffffffc0 2cc23fd0 ffffffc0 00000000 00000000 7c80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 7ca0: c0aa71c3 0000007f 6d203631 746e756f 00000099 00000000 a7306a2f fefeff7e 7cc0: 01010101 01010101 00000006 00000000 00000000 00000000 32393237 6f6d2c6b 7ce0: a82d3624 0000007f 18000000 00241676 [<ffffffc000085c24>] el1_da+0x14/0x70 [<ffffffc0000d0ecc>] thread_group_cputime_adjusted+0x1c/0x44 [<ffffffc0000bafd4>] do_sys_times+0x28/0x84 [<ffffffc0000bb048>] SyS_times+0x18/0x78 Code: f9400003 b40008a3 f9400062 37000362 (f9400444) ---[ end trace d68092dda907ca25 ]--- -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1469218 Title: HP ProLiant m400 Server sda timeout causes file system hang Status in linux package in Ubuntu: Triaged Bug description: While running stress-ng on a ProLiant m400 Server I managed to cause the disk controller to timeout which causes a file system hang. I am wondering if the timeout was causes because I completely overloaded the system causing it to be slow on ata handling times. I ran: stress-ng --all 64 -t 600 -v and the machine slowly clogged up with stress processes, and finally hit the hang. Had to reboot the system. Attached is a kernel log. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1469218/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
