[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.292235][ T8465] loop0: detected capacity change from 16384 to 0 [ 72.305808][ T8465] ================================================================================ [ 72.316557][ T8465] UBSAN: shift-out-of-bounds in fs/f2fs/super.c:2812:16 [ 72.336386][ T8465] shift exponent 59 is too large for 32-bit type 'int' [ 72.343285][ T8465] CPU: 0 PID: 8465 Comm: syz-executor962 Not tainted 5.10.0-rc6-next-20201207-syzkaller #0 [ 72.353362][ T8465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.363646][ T8465] Call Trace: [ 72.366989][ T8465] dump_stack+0x107/0x163 [ 72.371362][ T8465] ubsan_epilogue+0xb/0x5a [ 72.375809][ T8465] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 72.382557][ T8465] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.388776][ T8465] ? __bread_gfp+0x8e/0x3b0 [ 72.393261][ T8465] f2fs_fill_super.cold+0x16c9/0x16f6 [ 72.398614][ T8465] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.404852][ T8465] ? vsnprintf+0x2cc/0x14f0 [ 72.409343][ T8465] ? lock_downgrade+0x6d0/0x6d0 [ 72.415406][ T8465] ? vsprintf+0x30/0x30 [ 72.419543][ T8465] ? f2fs_commit_super+0x840/0x840 [ 72.424635][ T8465] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 72.430347][ T8465] ? set_blocksize+0x1c1/0x400 [ 72.435098][ T8465] mount_bdev+0x34d/0x410 [ 72.439411][ T8465] ? f2fs_commit_super+0x840/0x840 [ 72.444510][ T8465] ? __bpf_trace_f2fs_fiemap+0x1b0/0x1b0 [ 72.450231][ T8465] legacy_get_tree+0x105/0x220 [ 72.455014][ T8465] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.461247][ T8465] ? ns_capable_common+0x117/0x140 [ 72.466360][ T8465] vfs_get_tree+0x89/0x2f0 [ 72.470763][ T8465] path_mount+0x12ae/0x1e70 [ 72.475249][ T8465] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.482255][ T8465] ? strncpy_from_user+0x2a0/0x3e0 [ 72.487643][ T8465] ? finish_automount+0xb20/0xb20 [ 72.492735][ T8465] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.498963][ T8465] ? getname_flags.part.0+0x1dd/0x4f0 [ 72.504440][ T8465] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.510712][ T8465] __x64_sys_mount+0x27f/0x300 [ 72.515476][ T8465] ? copy_mnt_ns+0xae0/0xae0 [ 72.520068][ T8465] ? syscall_enter_from_user_mode+0x1d/0x50 [ 72.525955][ T8465] do_syscall_64+0x2d/0x70 [ 72.530371][ T8465] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.536251][ T8465] RIP: 0033:0x446d4a [ 72.540140][ T8465] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 72.559730][ T8465] RSP: 002b:00007fff137bba68 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 72.568147][ T8465] RAX: ffffffffffffffda RBX: 00007fff137bbac0 RCX: 0000000000446d4a [ 72.576649][ T8465] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff137bba80 [ 72.584619][ T8465] RBP: 00007fff137bba80 R08: 00007fff137bbac0 R09: 00007fff00000015 [ 72.592585][ T8465] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000002 [ 72.600537][ T8465] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 72.610452][ T8465] ================================================================================ [ 72.620568][ T8465] Kernel panic - not syncing: panic_on_warn set ... [ 72.627163][ T8465] CPU: 1 PID: 8465 Comm: syz-executor962 Not tainted 5.10.0-rc6-next-20201207-syzkaller #0 [ 72.637134][ T8465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.647322][ T8465] Call Trace: [ 72.650612][ T8465] dump_stack+0x107/0x163 [ 72.654939][ T8465] panic+0x343/0x77f [ 72.658856][ T8465] ? __warn_printk+0xf3/0xf3 [ 72.663463][ T8465] ? ubsan_epilogue+0x3e/0x5a [ 72.668483][ T8465] ubsan_epilogue+0x54/0x5a [ 72.672988][ T8465] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 72.680311][ T8465] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.686546][ T8465] ? __bread_gfp+0x8e/0x3b0 [ 72.691047][ T8465] f2fs_fill_super.cold+0x16c9/0x16f6 [ 72.696413][ T8465] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.702635][ T8465] ? vsnprintf+0x2cc/0x14f0 [ 72.707141][ T8465] ? lock_downgrade+0x6d0/0x6d0 [ 72.711987][ T8465] ? vsprintf+0x30/0x30 [ 72.716169][ T8465] ? f2fs_commit_super+0x840/0x840 [ 72.721287][ T8465] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 72.727000][ T8465] ? set_blocksize+0x1c1/0x400 [ 72.731762][ T8465] mount_bdev+0x34d/0x410 [ 72.736131][ T8465] ? f2fs_commit_super+0x840/0x840 [ 72.741255][ T8465] ? __bpf_trace_f2fs_fiemap+0x1b0/0x1b0 [ 72.746876][ T8465] legacy_get_tree+0x105/0x220 [ 72.751652][ T8465] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.757888][ T8465] ? ns_capable_common+0x117/0x140 [ 72.762998][ T8465] vfs_get_tree+0x89/0x2f0 [ 72.767435][ T8465] path_mount+0x12ae/0x1e70 [ 72.772092][ T8465] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.778333][ T8465] ? strncpy_from_user+0x2a0/0x3e0 [ 72.783457][ T8465] ? finish_automount+0xb20/0xb20 [ 72.788472][ T8465] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.794704][ T8465] ? getname_flags.part.0+0x1dd/0x4f0 [ 72.800064][ T8465] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.806302][ T8465] __x64_sys_mount+0x27f/0x300 [ 72.811063][ T8465] ? copy_mnt_ns+0xae0/0xae0 [ 72.815660][ T8465] ? syscall_enter_from_user_mode+0x1d/0x50 [ 72.821549][ T8465] do_syscall_64+0x2d/0x70 [ 72.826113][ T8465] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.832013][ T8465] RIP: 0033:0x446d4a [ 72.835898][ T8465] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 72.855496][ T8465] RSP: 002b:00007fff137bba68 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 72.863994][ T8465] RAX: ffffffffffffffda RBX: 00007fff137bbac0 RCX: 0000000000446d4a [ 72.872059][ T8465] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff137bba80 [ 72.882553][ T8465] RBP: 00007fff137bba80 R08: 00007fff137bbac0 R09: 00007fff00000015 [ 72.890693][ T8465] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000002 [ 72.898771][ T8465] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 72.907668][ T8465] Kernel Offset: disabled [ 72.912875][ T8465] Rebooting in 86400 seconds..