watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.5:2101]
Modules linked in:
CPU: 0 PID: 2101 Comm: syz-executor.5 Not tainted 5.4.125-syzkaller-00012-ge7e1f9adf836 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__kasan_check_read+0x0/0x10 mm/kasan/common.c:93
Code: 90 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 80 ed 01 00 ff 80 e0 09 00 00 c3 65 48 8b 04 25 80 ed 01 00 ff 88 e0 09 00 00 c3 <89> f6 48 8b 0c 24 31 d2 e9 d3 22 00 00 0f 1f 00 89 f6 48 8b 0c 24
RSP: 0018:ffff88819b9f6f38 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffffffff817b9005 RBX: ffff8881ec0bc0b0 RCX: 0000000000040000
RDX: ffffc900051af000 RSI: 0000000000000008 RDI: ffff8881ec0bc0b0
RBP: ffff88819b9f70d0 R08: ffffffff817b8f80 R09: ffffed103c3f3328
R10: ffffed103c3f3328 R11: 0000000000000000 R12: ffff8881ec0bc000
R13: ffff8881ec0bc010 R14: dffffc0000000000 R15: ffff88819b9f7398
FS:  00007f80cdb82700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000206a41ff CR3: 00000001ea598000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 atomic64_read include/asm-generic/atomic-instrumented.h:836 [inline]
 atomic_long_read include/asm-generic/atomic-long.h:28 [inline]
 perf_event_count kernel/events/core.c:4023 [inline]
 perf_output_read_group kernel/events/core.c:6343 [inline]
 perf_output_read+0xf99/0x1480 kernel/events/core.c:6380
 perf_output_sample+0x357/0x1e30 kernel/events/core.c:6422
 __perf_event_output kernel/events/core.c:6749 [inline]
 perf_event_output_forward+0x140/0x1b0 kernel/events/core.c:6763
 __perf_event_overflow+0x1b9/0x340 kernel/events/core.c:8237
 do_perf_sw_event kernel/events/core.c:8454 [inline]
 ___perf_sw_event+0x3cc/0x4c0 kernel/events/core.c:8485
 __perf_sw_event+0x12e/0x220 kernel/events/core.c:8497
 page_fault+0x2f/0x40 arch/x86/entry/entry_64.S:1203
RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:603 [inline]
RIP: 0010:iov_iter_fault_in_readable+0x250/0x640 lib/iov_iter.c:426
Code: bb 49 81 c4 00 10 00 00 4d 31 fc bf 00 10 00 00 4c 89 e6 e8 e2 e8 3e ff 49 81 fc 00 10 00 00 73 47 0f 1f 00 0f ae e8 45 31 ed <41> 8a 1f 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 41 8a 04 06 84 c0
RSP: 0018:ffff88819b9f7880 EFLAGS: 00010246
RAX: 0000000000000002 RBX: 00000000206a4200 RCX: 0000000000000002
RDX: ffff8881e4762f40 RSI: 00000000000003ff RDI: 0000000000001000
RBP: ffff88819b9f7930 R08: ffffffff82266f2e R09: ffffed10338c8aa0
R10: ffffed10338c8aa0 R11: 0000000000000000 R12: 00000000000003ff
R13: 0000000000000000 R14: 1ffff1103373ef1a R15: 00000000206a41ff
 generic_perform_write+0x1ee/0x5a0 mm/filemap.c:3301
 __generic_file_write_iter+0x239/0x480 mm/filemap.c:3440
 ext4_file_write_iter+0x49e/0x10e0 fs/ext4/file.c:270
 call_write_iter include/linux/fs.h:1976 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x5ec/0x780 fs/read_write.c:496
 vfs_write+0x212/0x4e0 fs/read_write.c:558
 ksys_write+0x186/0x2b0 fs/read_write.c:611
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4665e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f80cdb82188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000806013 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffc23bb9f1f R14: 00007f80cdb82300 R15: 0000000000022000
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0x1f/0x30 arch/x86/kernel/process.c:572