https://bugzilla.kernel.org/show_bug.cgi?id=217965 --- Comment #2 from Ivan Ivanich (iivanich@xxxxxxxxx) --- Backtrace echo l > /proc/sysrq-trigger: [ 3128.330756] CPU: 2 PID: 311853 Comm: patch Tainted: P O 6.6.0-rc4-x86_64 #1 [ 3128.330758] Hardware name: ASUS All Series/Z97-K, BIOS 2902 03/31/2016 [ 3128.330759] RIP: 0010:mb_find_order_for_block+0x68/0xa0 [ 3128.330762] Code: d0 02 00 00 42 0f b7 04 00 48 01 f0 48 89 c6 41 89 f9 c1 e0 03 83 e0 38 41 d3 f9 48 83 e6 f8 44 01 c8 48 98 48 0f a3 06 73 27 <0f> b7 42 30 83 c1 01 83 c0 01 39 c1 7f 17 48 8b 42 18 48 8b 72 08 [ 3128.330763] RSP: 0018:ffffc9000e363630 EFLAGS: 00000207 [ 3128.330765] RAX: 0000000000000036 RBX: ffffc9000e363698 RCX: 000000000000000c [ 3128.330766] RDX: ffffc9000e363738 RSI: ffff88810a7e2ff8 RDI: 0000000000006000 [ 3128.330767] RBP: 0000000000007ff0 R08: 0000000000000018 R09: 0000000000000006 [ 3128.330767] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000006000 [ 3128.330768] R13: 0000000000006000 R14: 000000000000000d R15: ffffc9000e363738 [ 3128.330769] FS: 00007f237c609740(0000) GS:ffff88841fa80000(0000) knlGS:0000000000000000 [ 3128.330771] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3128.330772] CR2: 00005576c2964000 CR3: 0000000261c76004 CR4: 00000000001706e0 [ 3128.330773] Call Trace: [ 3128.330774] <NMI> [ 3128.330774] ? nmi_cpu_backtrace+0x88/0xf0 [ 3128.330776] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 3128.330778] ? nmi_handle+0x53/0xf0 [ 3128.330780] ? default_do_nmi+0x40/0x220 [ 3128.330782] ? exc_nmi+0xf3/0x120 [ 3128.330784] ? end_repeat_nmi+0x16/0x67 [ 3128.330787] ? mb_find_order_for_block+0x68/0xa0 [ 3128.330788] ? mb_find_order_for_block+0x68/0xa0 [ 3128.330790] ? mb_find_order_for_block+0x68/0xa0 [ 3128.330792] </NMI> [ 3128.330792] <TASK> [ 3128.330793] mb_find_extent+0x149/0x200 [ 3128.330795] ext4_mb_scan_aligned+0xd3/0x140 [ 3128.330798] ext4_mb_regular_allocator+0xcca/0xe50 [ 3128.330800] ext4_mb_new_blocks+0x8c6/0xe80 [ 3128.330802] ? ext4_find_extent+0x3c1/0x410 [ 3128.330803] ? release_pages+0x13a/0x400 [ 3128.330805] ext4_ext_map_blocks+0x626/0x15c0 [ 3128.330807] ? filemap_get_folios_tag+0x1c6/0x1f0 [ 3128.330809] ? mpage_prepare_extent_to_map+0x462/0x4a0 [ 3128.330811] ext4_map_blocks+0x18b/0x5f0 [ 3128.330813] ? kmem_cache_alloc+0x278/0x410 [ 3128.330814] ? ext4_alloc_io_end_vec+0x19/0x50 [ 3128.330816] ext4_do_writepages+0x619/0xa90 [ 3128.330818] ext4_writepages+0xa8/0x180 [ 3128.330819] do_writepages+0xc6/0x190 [ 3128.330821] ? __find_get_block+0x1b2/0x2a0 [ 3128.330824] filemap_fdatawrite_wbc+0x5e/0x80 [ 3128.330827] __filemap_fdatawrite_range+0x57/0x80 [ 3128.330829] ext4_rename+0x753/0xbf0 [ 3128.330831] vfs_rename+0xa7e/0xbe0 [ 3128.330834] ? do_renameat2+0x4be/0x660 [ 3128.330836] do_renameat2+0x4be/0x660 [ 3128.330838] __x64_sys_renameat+0x44/0x60 [ 3128.330839] do_syscall_64+0x3f/0x90 [ 3128.330841] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 3128.330843] RIP: 0033:0x7f237c66160a [ 3128.330844] Code: 48 8b 15 21 e8 15 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 08 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 8b 15 e9 e7 15 00 f7 [ 3128.330845] RSP: 002b:00007ffcf85ca528 EFLAGS: 00000202 ORIG_RAX: 0000000000000108 [ 3128.330847] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f237c66160a [ 3128.330848] RDX: 0000000000000004 RSI: 00005576c295a091 RDI: 0000000000000004 [ 3128.330848] RBP: 0000000000000004 R08: 00000000000081a4 R09: 0000000000000000 [ 3128.330849] R10: 00005576c2959ad1 R11: 0000000000000202 R12: 00005576c2959ad1 [ 3128.330850] R13: 00005576c295a091 R14: 00007ffcf85ca630 R15: 0000000000000000 [ 3128.330851] </TASK> [ 3128.330852] NMI backtrace for cpu 6 skipped: idling at intel_idle+0x62/0xb0 [ 4648.228980] sysrq: Show backtrace of all active CPUs [ 4648.228983] NMI backtrace for cpu 1 [ 4648.228985] CPU: 1 PID: 526431 Comm: bash Tainted: P O 6.6.0-rc4-x86_64 #1 [ 4648.228987] Hardware name: ASUS All Series/Z97-K, BIOS 2902 03/31/2016 [ 4648.228987] Call Trace: [ 4648.228989] <TASK> [ 4648.228991] dump_stack_lvl+0x36/0x50 [ 4648.228995] nmi_cpu_backtrace+0xc0/0xf0 [ 4648.228997] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 4648.228999] nmi_trigger_cpumask_backtrace+0xc8/0xf0 [ 4648.229000] __handle_sysrq+0xd2/0x190 [ 4648.229002] write_sysrq_trigger+0x23/0x40 [ 4648.229004] proc_reg_write+0x57/0xa0 [ 4648.229006] vfs_write+0xcb/0x410 [ 4648.229008] ? filp_flush+0x4d/0x80 [ 4648.229010] ksys_write+0x62/0xe0 [ 4648.229011] do_syscall_64+0x3f/0x90 [ 4648.229013] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 4648.229016] RIP: 0033:0x7f3d2d70e640 [ 4648.229017] Code: 87 0c 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 80 3d 29 0d 0d 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 [ 4648.229019] RSP: 002b:00007ffd39f5e4a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 4648.229021] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f3d2d70e640 [ 4648.229022] RDX: 0000000000000002 RSI: 000055fbbed84ba0 RDI: 0000000000000001 [ 4648.229023] RBP: 00007f3d2d7d85c0 R08: 0000000000000030 R09: 00007f3d2d7d7b00 [ 4648.229024] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 [ 4648.229025] R13: 000055fbbed84ba0 R14: 0000000000000002 R15: 00007f3d2d7d5f40 [ 4648.229026] </TASK> [ 4648.229027] Sending NMI from CPU 1 to CPUs 0,2-7: [ 4648.229030] NMI backtrace for cpu 3 skipped: idling at intel_idle+0x62/0xb0 [ 4648.229033] NMI backtrace for cpu 7 skipped: idling at intel_idle+0x62/0xb0 [ 4648.229036] NMI backtrace for cpu 5 skipped: idling at intel_idle+0x62/0xb0 [ 4648.229039] NMI backtrace for cpu 2 [ 4648.229041] CPU: 2 PID: 71621 Comm: kworker/u16:1 Tainted: P O 6.6.0-rc4-x86_64 #1 [ 4648.229042] Hardware name: ASUS All Series/Z97-K, BIOS 2902 03/31/2016 [ 4648.229043] Workqueue: writeback wb_workfn (flush-8:16) [ 4648.229047] RIP: 0010:mb_find_order_for_block+0x66/0xa0 [ 4648.229050] Code: 8b 80 d0 02 00 00 42 0f b7 04 00 48 01 f0 48 89 c6 41 89 f9 c1 e0 03 83 e0 38 41 d3 f9 48 83 e6 f8 44 01 c8 48 98 48 0f a3 06 <73> 27 0f b7 42 30 83 c1 01 83 c0 01 39 c1 7f 17 48 8b 42 18 48 8b [ 4648.229052] RSP: 0018:ffffc90001f076c8 EFLAGS: 00000203 [ 4648.229053] RAX: 0000000000000138 RBX: ffffc90001f07730 RCX: 0000000000000006 [ 4648.229054] RDX: ffffc90001f077d0 RSI: ffff88810a7e2f80 RDI: 0000000000004e30 [ 4648.229055] RBP: 0000000000007ff0 R08: 000000000000000c R09: 0000000000000138 [ 4648.229056] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881049f7800 [ 4648.229056] R13: 0000000000000001 R14: 0000000000007ff0 R15: ffffc90001f077d0 [ 4648.229057] FS: 0000000000000000(0000) GS:ffff88841fa80000(0000) knlGS:0000000000000000 [ 4648.229059] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4648.229060] CR2: 00007f23b3ffc3a0 CR3: 000000023ba2a001 CR4: 00000000001706e0 [ 4648.229060] Call Trace: [ 4648.229061] <NMI> [ 4648.229062] ? nmi_cpu_backtrace+0x88/0xf0 [ 4648.229064] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 4648.229065] ? nmi_handle+0x53/0xf0 [ 4648.229068] ? default_do_nmi+0x40/0x220 [ 4648.229070] ? exc_nmi+0xf3/0x120 [ 4648.229072] ? end_repeat_nmi+0x16/0x67 [ 4648.229075] ? mb_find_order_for_block+0x66/0xa0 [ 4648.229077] ? mb_find_order_for_block+0x66/0xa0 [ 4648.229079] ? mb_find_order_for_block+0x66/0xa0 [ 4648.229081] </NMI> [ 4648.229081] <TASK> [ 4648.229081] mb_find_extent+0xd7/0x200 [ 4648.229084] ext4_mb_scan_aligned+0xd3/0x140 [ 4648.229086] ? ext4_get_group_info+0x4b/0x60 [ 4648.229088] ext4_mb_regular_allocator+0xcca/0xe50 [ 4648.229090] ? mempool_alloc+0x58/0x180 [ 4648.229093] ext4_mb_new_blocks+0x8c6/0xe80 [ 4648.229094] ? ext4_find_extent+0x3c1/0x410 [ 4648.229096] ext4_ext_map_blocks+0x626/0x15c0 [ 4648.229099] ? filemap_get_folios_tag+0x1c6/0x1f0 [ 4648.229100] ? mpage_prepare_extent_to_map+0x462/0x4a0 [ 4648.229102] ext4_map_blocks+0x18b/0x5f0 [ 4648.229104] ? kmem_cache_alloc+0x278/0x410 [ 4648.229106] ? ext4_alloc_io_end_vec+0x19/0x50 [ 4648.229109] ext4_do_writepages+0x619/0xa90 [ 4648.229111] ext4_writepages+0xa8/0x180 [ 4648.229113] do_writepages+0xc6/0x190 [ 4648.229115] __writeback_single_inode+0x2c/0x1a0 [ 4648.229117] writeback_sb_inodes+0x1e8/0x450 [ 4648.229119] __writeback_inodes_wb+0x47/0xe0 [ 4648.229121] wb_writeback.isra.0+0x159/0x1b0 [ 4648.229123] wb_workfn+0x269/0x380 [ 4648.229125] ? __schedule+0x2ca/0x1110 [ 4648.229127] ? __mod_timer+0x116/0x370 [ 4648.229130] process_one_work+0x12f/0x240 [ 4648.229132] worker_thread+0x2f0/0x410 [ 4648.229134] ? __pfx_worker_thread+0x10/0x10 [ 4648.229136] kthread+0xe3/0x110 [ 4648.229138] ? __pfx_kthread+0x10/0x10 [ 4648.229139] ret_from_fork+0x2f/0x50 [ 4648.229141] ? __pfx_kthread+0x10/0x10 [ 4648.229142] ret_from_fork_asm+0x1b/0x30 [ 4648.229145] </TASK> [ 4648.229145] NMI backtrace for cpu 0 skipped: idling at intel_idle+0x62/0xb0 [ 4648.229149] NMI backtrace for cpu 4 skipped: idling at intel_idle+0x62/0xb0 [ 4648.229151] NMI backtrace for cpu 6 skipped: idling at intel_idle+0x62/0xb0 -- You may reply to this email to add a comment. 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