Warning: Permanently added '10.128.0.103' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 56.274620][ T8458] ================================================================== [ 56.283259][ T8458] BUG: KASAN: null-ptr-deref in bdi_put+0x22/0xa0 [ 56.289666][ T8458] Write of size 4 at addr 0000000000000040 by task syz-executor913/8458 [ 56.297963][ T8458] [ 56.300258][ T8458] CPU: 0 PID: 8458 Comm: syz-executor913 Not tainted 5.11.0-rc2-syzkaller #0 [ 56.308992][ T8458] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.319026][ T8458] Call Trace: [ 56.322303][ T8458] dump_stack+0x107/0x163 [ 56.326701][ T8458] ? bdi_put+0x22/0xa0 [ 56.330745][ T8458] ? bdi_put+0x22/0xa0 [ 56.334783][ T8458] kasan_report.cold+0x5f/0xd5 [ 56.339520][ T8458] ? bdi_put+0x22/0xa0 [ 56.343561][ T8458] check_memory_region+0x13d/0x180 [ 56.348650][ T8458] bdi_put+0x22/0xa0 [ 56.352520][ T8458] bdev_evict_inode+0x262/0x460 [ 56.357344][ T8458] ? __blkdev_direct_IO_simple+0x930/0x930 [ 56.363128][ T8458] evict+0x2ed/0x6b0 [ 56.367000][ T8458] iput.part.0+0x57e/0x810 [ 56.371389][ T8458] ? find_inode_nowait+0x190/0x190 [ 56.376476][ T8458] iput+0x58/0x70 [ 56.380084][ T8458] dentry_unlink_inode+0x2b1/0x3d0 [ 56.385192][ T8458] __dentry_kill+0x3c0/0x640 [ 56.389787][ T8458] ? dput+0x35/0xbc0 [ 56.393674][ T8458] ? dput+0x35/0xbc0 [ 56.397545][ T8458] dput+0x725/0xbc0 [ 56.401335][ T8458] shrink_dcache_for_umount+0x11f/0x330 [ 56.406862][ T8458] generic_shutdown_super+0x68/0x370 [ 56.412137][ T8458] kill_anon_super+0x36/0x60 [ 56.416709][ T8458] deactivate_locked_super+0x94/0x160 [ 56.422064][ T8458] deactivate_super+0xad/0xd0 [ 56.426723][ T8458] put_fs_context+0xaa/0x650 [ 56.431292][ T8458] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 56.437513][ T8458] fscontext_release+0x4c/0x60 [ 56.442797][ T8458] __fput+0x283/0x920 [ 56.446782][ T8458] ? fs_validate_description+0x1d0/0x1d0 [ 56.452495][ T8458] task_work_run+0xdd/0x190 [ 56.456987][ T8458] do_exit+0xc5c/0x2ae0 [ 56.461127][ T8458] ? kfree+0x2d3/0x360 [ 56.465173][ T8458] ? mm_update_next_owner+0x7a0/0x7a0 [ 56.470520][ T8458] ? __do_sys_fsconfig+0x1c2/0xbd0 [ 56.475617][ T8458] ? fscontext_read+0x310/0x310 [ 56.480456][ T8458] do_group_exit+0x125/0x310 [ 56.485032][ T8458] __x64_sys_exit_group+0x3a/0x50 [ 56.490045][ T8458] do_syscall_64+0x2d/0x70 [ 56.494460][ T8458] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 56.500504][ T8458] RIP: 0033:0x43ee78 [ 56.504376][ T8458] Code: Unable to access opcode bytes at RIP 0x43ee4e. [ 56.511194][ T8458] RSP: 002b:00007ffe29eed0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 56.519672][ T8458] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee78 [ 56.527622][ T8458] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 56.535567][ T8458] RBP: 00000000004be688 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 56.543520][ T8458] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 56.551474][ T8458] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 56.559442][ T8458] ================================================================== [ 56.567478][ T8458] Disabling lock debugging due to kernel taint [ 56.574342][ T8458] Kernel panic - not syncing: panic_on_warn set ... [ 56.580929][ T8458] CPU: 0 PID: 8458 Comm: syz-executor913 Tainted: G B 5.11.0-rc2-syzkaller #0 [ 56.591081][ T8458] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.601121][ T8458] Call Trace: [ 56.604379][ T8458] dump_stack+0x107/0x163 [ 56.608692][ T8458] ? bdi_alloc+0x80/0x140 [ 56.612995][ T8458] panic+0x306/0x73d [ 56.616871][ T8458] ? __warn_printk+0xf3/0xf3 [ 56.621435][ T8458] ? preempt_schedule_common+0x59/0xc0 [ 56.626868][ T8458] ? bdi_put+0x22/0xa0 [ 56.630908][ T8458] ? preempt_schedule_thunk+0x16/0x18 [ 56.636260][ T8458] ? trace_hardirqs_on+0x38/0x1c0 [ 56.641272][ T8458] ? trace_hardirqs_on+0x51/0x1c0 [ 56.646282][ T8458] ? bdi_put+0x22/0xa0 [ 56.650456][ T8458] ? bdi_put+0x22/0xa0 [ 56.654499][ T8458] end_report+0x58/0x5e [ 56.658632][ T8458] kasan_report.cold+0x67/0xd5 [ 56.663463][ T8458] ? bdi_put+0x22/0xa0 [ 56.667511][ T8458] check_memory_region+0x13d/0x180 [ 56.672603][ T8458] bdi_put+0x22/0xa0 [ 56.676472][ T8458] bdev_evict_inode+0x262/0x460 [ 56.681299][ T8458] ? __blkdev_direct_IO_simple+0x930/0x930 [ 56.687083][ T8458] evict+0x2ed/0x6b0 [ 56.690966][ T8458] iput.part.0+0x57e/0x810 [ 56.695365][ T8458] ? find_inode_nowait+0x190/0x190 [ 56.700457][ T8458] iput+0x58/0x70 [ 56.704068][ T8458] dentry_unlink_inode+0x2b1/0x3d0 [ 56.709158][ T8458] __dentry_kill+0x3c0/0x640 [ 56.713725][ T8458] ? dput+0x35/0xbc0 [ 56.717773][ T8458] ? dput+0x35/0xbc0 [ 56.721642][ T8458] dput+0x725/0xbc0 [ 56.725426][ T8458] shrink_dcache_for_umount+0x11f/0x330 [ 56.730952][ T8458] generic_shutdown_super+0x68/0x370 [ 56.736225][ T8458] kill_anon_super+0x36/0x60 [ 56.740808][ T8458] deactivate_locked_super+0x94/0x160 [ 56.746338][ T8458] deactivate_super+0xad/0xd0 [ 56.750993][ T8458] put_fs_context+0xaa/0x650 [ 56.755563][ T8458] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 56.761787][ T8458] fscontext_release+0x4c/0x60 [ 56.766540][ T8458] __fput+0x283/0x920 [ 56.770500][ T8458] ? fs_validate_description+0x1d0/0x1d0 [ 56.776114][ T8458] task_work_run+0xdd/0x190 [ 56.780607][ T8458] do_exit+0xc5c/0x2ae0 [ 56.784748][ T8458] ? kfree+0x2d3/0x360 [ 56.788803][ T8458] ? mm_update_next_owner+0x7a0/0x7a0 [ 56.794159][ T8458] ? __do_sys_fsconfig+0x1c2/0xbd0 [ 56.799363][ T8458] ? fscontext_read+0x310/0x310 [ 56.804197][ T8458] do_group_exit+0x125/0x310 [ 56.808770][ T8458] __x64_sys_exit_group+0x3a/0x50 [ 56.813781][ T8458] do_syscall_64+0x2d/0x70 [ 56.818358][ T8458] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 56.824321][ T8458] RIP: 0033:0x43ee78 [ 56.828194][ T8458] Code: Unable to access opcode bytes at RIP 0x43ee4e. [ 56.835011][ T8458] RSP: 002b:00007ffe29eed0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 56.843409][ T8458] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee78 [ 56.851365][ T8458] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 56.859317][ T8458] RBP: 00000000004be688 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 56.867271][ T8458] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 56.875223][ T8458] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 56.887109][ T8458] Kernel Offset: disabled [ 56.892142][ T8458] Rebooting in 86400 seconds..