[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.156' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.925723] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000) [ 34.942336] kasan: CONFIG_KASAN_INLINE enabled [ 34.947041] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.954382] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.960589] CPU: 0 PID: 8089 Comm: syz-executor281 Not tainted 4.19.211-syzkaller #0 [ 34.968444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 34.977784] RIP: 0010:percpu_counter_add_batch+0x47/0x180 [ 34.983299] Code: 01 00 00 00 e8 7a 16 ba fd 4c 8d 75 50 48 c7 c7 40 1c b6 88 e8 da c8 ef ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 06 01 00 00 4c 8b 7d 50 65 45 8b 2f 4d 63 e5 4c [ 35.002175] RSP: 0018:ffff888095a37808 EFLAGS: 00010006 [ 35.007515] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffffff83771e23 [ 35.014759] RDX: 0000000000000027 RSI: ffffffff83771e31 RDI: 0000000000000005 [ 35.022006] RBP: 00000000000000e8 R08: 0000000000000001 R09: 0000000000000000 [ 35.029254] R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 [ 35.036500] R13: 0000000000000000 R14: 0000000000000138 R15: ffff88808b857880 [ 35.043747] FS: 0000555556e5a300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.051947] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.057803] CR2: 000055570f486468 CR3: 00000000a93c7000 CR4: 00000000003406f0 [ 35.065050] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.072312] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.079554] Call Trace: [ 35.082125] __test_set_page_writeback+0xf23/0x1750 [ 35.087121] __block_write_full_page+0xa74/0xf60 [ 35.091854] ? bh_uptodate_or_lock+0x100/0x100 [ 35.096411] ? udf_block_map+0x290/0x290 [ 35.100451] block_write_full_page+0x1f3/0x260 [ 35.105008] ? udf_block_map+0x290/0x290 [ 35.109053] udf_expand_file_adinicb+0x59b/0xf40 [ 35.113784] ? udf_direct_IO+0x240/0x240 [ 35.117826] udf_setsize+0x621/0x1030 [ 35.121604] ? inode_bmap+0x750/0x750 [ 35.125382] ? mark_held_locks+0xa6/0xf0 [ 35.129430] ? ktime_get_coarse_real_ts64+0x1c7/0x290 [ 35.134600] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.139168] ? ktime_get_coarse_real_ts64+0x1a1/0x290 [ 35.144338] ? inode_newsize_ok+0x121/0x1e0 [ 35.148638] ? setattr_prepare+0x135/0x7e0 [ 35.152854] udf_setattr+0x33d/0x430 [ 35.156550] ? udf_file_write_iter+0x4e0/0x4e0 [ 35.161190] notify_change+0x70b/0xfc0 [ 35.165075] do_truncate+0x134/0x1f0 [ 35.168765] ? dentry_open+0x1d0/0x1d0 [ 35.172634] ? apparmor_path_truncate+0x183/0x200 [ 35.177457] ? inode_permission.part.0+0x10c/0x450 [ 35.182363] vfs_truncate+0x54b/0x6d0 [ 35.186145] ? do_truncate+0x1f0/0x1f0 [ 35.190009] ? getname_flags+0x25b/0x590 [ 35.194046] do_sys_truncate+0x145/0x170 [ 35.198085] ? vfs_truncate+0x6d0/0x6d0 [ 35.202046] ? trace_hardirqs_off_caller+0x6e/0x210 [ 35.207041] ? do_syscall_64+0x21/0x620 [ 35.210992] do_syscall_64+0xf9/0x620 [ 35.214775] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.219946] RIP: 0033:0x7f434f10f379 [ 35.223638] 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 c0 ff ff ff f7 d8 64 89 01 48 [ 35.242513] RSP: 002b:00007ffd46a7aa08 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 35.250201] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f434f10f379 [ 35.257450] RDX: 00007f434f0cd683 RSI: 0000000000000300 RDI: 0000000020002780 [ 35.264699] RBP: 00007f434f0ce950 R08: 0000555556e5a2c0 R09: 0000000000000000 [ 35.271953] R10: 00007ffd46a7a8d0 R11: 0000000000000246 R12: 00007f434f0ce9e0 [ 35.279211] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.286461] Modules linked in: [ 35.289641] ---[ end trace 418f2b44882fa4a3 ]--- [ 35.294384] RIP: 0010:percpu_counter_add_batch+0x47/0x180 [ 35.299899] Code: 01 00 00 00 e8 7a 16 ba fd 4c 8d 75 50 48 c7 c7 40 1c b6 88 e8 da c8 ef ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 06 01 00 00 4c 8b 7d 50 65 45 8b 2f 4d 63 e5 4c [ 35.318776] RSP: 0018:ffff888095a37808 EFLAGS: 00010006 [ 35.324117] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffffff83771e23 [ 35.331363] RDX: 0000000000000027 RSI: ffffffff83771e31 RDI: 0000000000000005 [ 35.338610] RBP: 00000000000000e8 R08: 0000000000000001 R09: 0000000000000000 [ 35.345862] R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 [ 35.353107] R13: 0000000000000000 R14: 0000000000000138 R15: ffff88808b857880 [ 35.360358] FS: 0000555556e5a300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.368560] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.374419] CR2: 000055570f486468 CR3: 00000000a93c7000 CR4: 00000000003406f0 [ 35.381695] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.388957] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.396202] Kernel panic - not syncing: Fatal exception [ 35.401706] Kernel Offset: disabled [ 35.405312] Rebooting in 86400 seconds..