syzkaller syzkaller login: [ 23.325738][ T1058] cgroup: Unknown subsys name 'net' [ 23.326785][ T1058] cgroup: Unknown subsys name 'net_prio' [ 23.327636][ T1058] cgroup: Unknown subsys name 'devices' [ 23.328528][ T1058] cgroup: Unknown subsys name 'blkio' [ 23.413835][ T1058] cgroup: Unknown subsys name 'hugetlb' [ 23.419705][ T1058] cgroup: Unknown subsys name 'rlimit' [ 23.653176][ T1058] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.437814][ T1061] syz-executor.0 (1061) used greatest stack depth: 11848 bytes left Warning: Permanently added '10.128.1.60' (ED25519) to the list of known hosts. 2024/03/12 05:05:36 ignoring optional flag "sandboxArg"="0" 2024/03/12 05:05:36 parsed 1 programs 2024/03/12 05:05:37 executed programs: 0 [ 41.881756][ T1586] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 42.691203][ T2010] loop0: detected capacity change from 0 to 8192 [ 42.698423][ T2010] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal [ 42.708418][ T2010] REISERFS (device loop0): using ordered data mode [ 42.714986][ T2010] reiserfs: using flush barriers [ 42.720113][ T2010] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 42.736644][ T2010] REISERFS (device loop0): checking transaction log (loop0) [ 42.751734][ T2010] REISERFS (device loop0): Using r5 hash to sort names [ 42.758748][ T2010] REISERFS (device loop0): using 3.5.x disk format [ 42.765502][ T2010] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 42.794608][ T1592] divide error: 0000 [#1] PREEMPT SMP [ 42.799981][ T1592] CPU: 0 PID: 1592 Comm: syz-executor.0 Not tainted 5.15.151-syzkaller #0 [ 42.808447][ T1592] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 42.818468][ T1592] RIP: 0010:do_journal_end+0x4c2/0xe60 [ 42.823909][ T1592] Code: 8b 57 28 48 89 4c 02 f4 8b 43 30 31 d2 41 89 06 49 8b 8d 60 06 00 00 48 8b 43 48 48 03 43 40 48 8b 79 08 48 83 c0 01 8b 77 14 <48> f7 f6 8b 77 0c 48 8b 41 18 b9 08 00 00 00 48 01 d6 41 8b 55 18 [ 42.843482][ T1592] RSP: 0018:ffffc90000e23d80 EFLAGS: 00010206 [ 42.849625][ T1592] RAX: 0000000000000003 RBX: ffffc900025dd000 RCX: ffff888109df8800 [ 42.857589][ T1592] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881102ff000 [ 42.865613][ T1592] RBP: ffff8881017b9bc0 R08: 0000000000000289 R09: ffff8881067e4000 [ 42.873671][ T1592] R10: ffff8881055189d8 R11: 0000000000000000 R12: ffff88810846b000 [ 42.881637][ T1592] R13: ffff88810846b000 R14: ffff8881067e4000 R15: ffff88810b0d0690 [ 42.889691][ T1592] FS: 0000555556544480(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 [ 42.898802][ T1592] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.905363][ T1592] CR2: 000055555654d7f8 CR3: 0000000106677000 CR4: 00000000003506f0 [ 42.913320][ T1592] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.921456][ T1592] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.929570][ T1592] Call Trace: [ 42.932827][ T1592] [ 42.935730][ T1592] ? __die+0x58/0x97 [ 42.939670][ T1592] ? die+0x26/0x40 [ 42.943365][ T1592] ? do_trap+0xc6/0x120 [ 42.947492][ T1592] ? do_journal_end+0x4c2/0xe60 [ 42.952419][ T1592] ? do_error_trap+0x60/0x80 [ 42.957058][ T1592] ? do_journal_end+0x4c2/0xe60 [ 42.961955][ T1592] ? exc_divide_error+0x36/0x50 [ 42.966815][ T1592] ? do_journal_end+0x4c2/0xe60 [ 42.971807][ T1592] ? asm_exc_divide_error+0x16/0x20 [ 42.977184][ T1592] ? do_journal_end+0x4c2/0xe60 [ 42.982020][ T1592] reiserfs_sync_fs+0x66/0x80 [ 42.986773][ T1592] sync_filesystem+0x2f/0x80 [ 42.991583][ T1592] generic_shutdown_super+0x1d/0x100 [ 42.996858][ T1592] kill_block_super+0x1c/0x40 [ 43.001766][ T1592] deactivate_locked_super+0x27/0x90 [ 43.007115][ T1592] cleanup_mnt+0x10b/0x150 [ 43.011504][ T1592] task_work_run+0x54/0x80 [ 43.015899][ T1592] exit_to_user_mode_prepare+0x15a/0x160 [ 43.021585][ T1592] syscall_exit_to_user_mode+0x12/0x30 [ 43.027097][ T1592] do_syscall_64+0x42/0x80 [ 43.031474][ T1592] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 43.037327][ T1592] RIP: 0033:0x7fd31609b017 [ 43.041725][ T1592] Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 [ 43.061377][ T1592] RSP: 002b:00007ffca8e80d88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 43.069845][ T1592] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd31609b017 [ 43.078030][ T1592] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffca8e80e40 [ 43.085975][ T1592] RBP: 00007ffca8e80e40 R08: 0000000000000000 R09: 0000000000000000 [ 43.094077][ T1592] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffca8e81f00 [ 43.102265][ T1592] R13: 00007fd3160e53b9 R14: 000000000000a694 R15: 0000000000000005 [ 43.110216][ T1592] [ 43.113206][ T1592] Modules linked in: [ 43.117384][ T1592] ---[ end trace 7d9d40f0dd6ebe3f ]--- [ 43.122824][ T1592] RIP: 0010:do_journal_end+0x4c2/0xe60 [ 43.128303][ T1592] Code: 8b 57 28 48 89 4c 02 f4 8b 43 30 31 d2 41 89 06 49 8b 8d 60 06 00 00 48 8b 43 48 48 03 43 40 48 8b 79 08 48 83 c0 01 8b 77 14 <48> f7 f6 8b 77 0c 48 8b 41 18 b9 08 00 00 00 48 01 d6 41 8b 55 18 [ 43.147910][ T1592] RSP: 0018:ffffc90000e23d80 EFLAGS: 00010206 [ 43.153957][ T1592] RAX: 0000000000000003 RBX: ffffc900025dd000 RCX: ffff888109df8800 [ 43.161997][ T1592] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881102ff000 [ 43.170038][ T1592] RBP: ffff8881017b9bc0 R08: 0000000000000289 R09: ffff8881067e4000 [ 43.180155][ T1592] R10: ffff8881055189d8 R11: 0000000000000000 R12: ffff88810846b000 [ 43.188541][ T1592] R13: ffff88810846b000 R14: ffff8881067e4000 R15: ffff88810b0d0690 [ 43.196785][ T1592] FS: 0000555556544480(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 [ 43.206079][ T1592] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.212636][ T1592] CR2: 0000000020400000 CR3: 0000000106677000 CR4: 00000000003506e0 [ 43.220606][ T1592] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.228572][ T1592] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.236609][ T1592] Kernel panic - not syncing: Fatal exception [ 43.243014][ T1592] Kernel Offset: disabled [ 43.247397][ T1592] Rebooting in 86400 seconds..