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rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (0 ticks this GP) idle=a4d/1/0x4000000000000000 softirq=215785/215785 fqs=2099 (detected by 0, t=10502 jiffies, g=273585, q=240) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 28093 Comm: syz-executor.1 Not tainted 5.15.139-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:55 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x4a/0x290 mm/kasan/generic.c:189 Code: 48 c1 ed 2f 81 fd ff ff 01 00 0f 82 46 02 00 00 48 89 fb 48 c1 eb 03 49 b8 00 00 00 00 00 fc ff df 4e 8d 0c 03 4c 8d 54 37 ff <49> c1 ea 03 49 bb 01 00 00 00 00 fc ff df 4f 8d 34 1a 4c 89 f5 4c RSP: 0018:ffffc90000dd0a38 EFLAGS: 00000802 RAX: 0000000000000001 RBX: 1ffffffff1f79c20 RCX: ffffffff816290df RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fbce100 RBP: 000000000001ffff R08: dffffc0000000000 R09: fffffbfff1f79c20 R10: ffffffff8fbce107 R11: dffffc0000000001 R12: 0000000000000004 R13: ffff88801c36c668 R14: 1ffff1100386d8e6 R15: ffff88801c36c730 FS: 00007f848e7f66c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020390000 CR3: 00000000998b2000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <IRQ> instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] __lock_acquire+0xcef/0x1ff0 kernel/locking/lockdep.c:4981 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:269 rcu_read_lock include/linux/rcupdate.h:696 [inline] advance_sched+0x6ce/0x940 net/sched/sch_taprio.c:769 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:memory_is_nonzero mm/kasan/generic.c:101 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x5c/0x290 mm/kasan/generic.c:189 Code: fb 48 c1 eb 03 49 b8 00 00 00 00 00 fc ff df 4e 8d 0c 03 4c 8d 54 37 ff 49 c1 ea 03 49 bb 01 00 00 00 00 fc ff df 4f 8d 34 1a <4c> 89 f5 4c 29 cd 48 83 fd 10 7f 26 48 85 ed 0f 84 3a 01 00 00 49 RSP: 0018:ffffc9000c23f798 EFLAGS: 00000a03 RAX: ffffffff81e53801 RBX: 1ffffd4000408a20 RCX: ffffffff81e53831 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffea0002045100 RBP: 000000000001ffff R08: dffffc0000000000 R09: fffff94000408a20 R10: 1ffffd4000408a20 R11: dffffc0000000001 R12: 00fff00000002011 R13: dffffc0000000000 R14: fffff94000408a21 R15: ffffea0002045108 instrument_atomic_read_write include/linux/instrumented.h:101 [inline] test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:70 [inline] TestSetPageDirty include/linux/page-flags.h:348 [inline] mark_buffer_dirty+0x271/0x4b0 fs/buffer.c:1105 __block_commit_write+0x1db/0x310 fs/buffer.c:2085 block_write_end fs/buffer.c:2164 [inline] generic_write_end+0xa7/0x440 fs/buffer.c:2178 ext4_da_write_end+0x72d/0x9e0 fs/ext4/inode.c:3084 generic_perform_write+0x3b7/0x5b0 mm/filemap.c:3787 ext4_buffered_write_iter+0x227/0x360 fs/ext4/file.c:268 ext4_file_write_iter+0x87c/0x1990 call_write_iter include/linux/fs.h:2103 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0xacf/0xe50 fs/read_write.c:594 ksys_write+0x1a2/0x2c0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f8490274ae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f848e7f60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f8490393f80 RCX: 00007f8490274ae9 RDX: 000000000208e24b RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007f84902c047a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8490393f80 R15: 00007fff7db4a838 </TASK>
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023/11/21 20:44 | linux-5.15.y | 2a910f4af54d | cb976f63 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: rcu detected stall in ext4_file_write_iter |