[ 180.107397][ T41] audit: type=1400 audit(1592565772.103:41): avc: denied { map } for pid=9501 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '[localhost]:1126' (ECDSA) to the list of known hosts. [ 221.120347][ T41] audit: type=1400 audit(1592565813.123:42): avc: denied { map } for pid=9518 comm="syz-executor593" path="/syz-executor593915579" dev="sda1" ino=16526 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 executing program executing program executing program executing program [ 221.473178][ T9526] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 221.476868][ T9527] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 221.503297][ T9530] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 221.519980][ T9526] minix_free_inode: bit 1 already cleared [ 221.572613][ T9530] minix_free_inode: bit 1 already cleared [ 221.596507][ T9527] minix_free_inode: bit 1 already cleared [ 221.635416][ T9528] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 221.765699][ T9547] ================================================================== [ 221.801825][ T9547] BUG: KASAN: null-ptr-deref in get_block+0x635/0x1380 [ 221.821944][ T9532] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 221.837461][ T9547] Write of size 8 at addr 0000000000000000 by task syz-executor593/9547 [ 221.837461][ T9547] [ 221.837461][ T9547] CPU: 0 PID: 9547 Comm: syz-executor593 Not tainted 5.7.0-syzkaller #0 [ 221.837461][ T9547] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 221.837461][ T9547] Call Trace: [ 221.837461][ T9547] dump_stack+0x188/0x20d [ 221.837461][ T9547] ? get_block+0x635/0x1380 [ 221.837461][ T9547] ? get_block+0x635/0x1380 [ 221.837461][ T9547] kasan_report.cold+0x5/0x37 [ 221.837461][ T9547] ? get_block+0x635/0x1380 [ 221.837461][ T9547] check_memory_region+0x141/0x190 [ 221.837461][ T9547] get_block+0x635/0x1380 [ 221.837461][ T9547] ? block_to_path.isra.0+0x300/0x300 [ 221.837461][ T9547] ? touch_buffer+0x330/0x330 [ 221.837461][ T9547] ? create_empty_buffers+0x5b8/0x8c0 [ 221.837461][ T9547] ? do_raw_spin_unlock+0x171/0x260 [ 221.837461][ T9547] minix_get_block+0xe5/0x110 [ 221.837461][ T9547] __block_write_begin_int+0x490/0x1b20 [ 221.837461][ T9547] ? minix_rename+0x8c0/0x8c0 [ 221.837461][ T9547] ? remove_inode_buffers+0x1c0/0x1c0 [ 221.837461][ T9547] ? pagecache_get_page+0x204/0xa10 [ 221.837461][ T9547] ? balance_dirty_pages_ratelimited+0x160/0x1d50 [ 221.837461][ T9547] ? wait_for_stable_page+0x11c/0x1e0 [ 221.837461][ T9547] ? minix_rename+0x8c0/0x8c0 [ 221.837461][ T9547] block_write_begin+0x58/0x2e0 [ 221.837461][ T9547] minix_write_begin+0x35/0xe0 [ 221.837461][ T9547] generic_perform_write+0x20a/0x4e0 [ 221.837461][ T9547] ? trace_event_raw_event_file_check_and_advance_wb_err+0x4a0/0x4a0 [ 221.837461][ T9547] ? update_time+0xc0/0xc0 [ 221.837461][ T9547] ? down_write+0xdb/0x150 [ 221.837461][ T9547] __generic_file_write_iter+0x24c/0x610 [ 221.890856][ T9532] minix_free_inode: bit 1 already cleared [ 221.919610][ T9547] generic_file_write_iter+0x3f3/0x630 [ 221.919610][ T9547] ? __generic_file_write_iter+0x610/0x610 [ 221.919610][ T9547] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 221.919610][ T9547] ? find_held_lock+0x2d/0x110 [ 221.919610][ T9547] new_sync_write+0x426/0x650 [ 221.919610][ T9547] ? new_sync_read+0x6d0/0x6d0 [ 221.919610][ T9547] ? debug_smp_processor_id+0x2f/0x185 [ 221.919610][ T9547] ? rcu_read_lock_any_held+0xcd/0xf0 [ 221.919610][ T9547] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 221.919610][ T9547] __vfs_write+0xc9/0x100 [ 221.919610][ T9547] vfs_write+0x268/0x5d0 [ 221.919610][ T9547] ksys_write+0x12d/0x250 [ 221.919610][ T9547] ? __ia32_sys_read+0xb0/0xb0 [ 221.919610][ T9547] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 221.919610][ T9547] ? do_syscall_64+0x21/0x7d0 [ 221.919610][ T9547] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 221.919610][ T9547] do_syscall_64+0xf6/0x7d0 [ 221.919610][ T9547] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 221.919610][ T9547] RIP: 0033:0x43e919 [ 221.919610][ T9547] Code: bd 91 fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 8b 91 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 221.919610][ T9547] RSP: 002b:00007fcaef905ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 221.919610][ T9547] RAX: ffffffffffffffda RBX: 00000000006c3c48 RCX: 000000000043e919 [ 221.919610][ T9547] RDX: 000000000000fdef RSI: 00000000200002c0 RDI: 0000000000000008 [ 221.919610][ T9547] RBP: 00000000006c3c40 R08: 0000000000000000 R09: 0000000000000000 [ 221.919610][ T9547] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006c3c4c [ 221.919610][ T9547] R13: 00007ffea77dfeef R14: 00007fcaef8e6000 R15: 0000000000000003 [ 221.919610][ T9547] ================================================================== [ 221.919610][ T9547] Disabling lock debugging due to kernel taint [ 221.965522][ T9547] Kernel panic - not syncing: panic_on_warn set ... [ 222.054142][ T9547] CPU: 0 PID: 9547 Comm: syz-executor593 Tainted: G B 5.7.0-syzkaller #0 [ 222.054142][ T9547] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 222.054142][ T9547] Call Trace: [ 222.054142][ T9547] dump_stack+0x188/0x20d [ 222.054142][ T9547] ? get_block+0x540/0x1380 [ 222.054142][ T9547] panic+0x2e3/0x75c [ 222.054142][ T9547] ? add_taint.cold+0x16/0x16 [ 222.054142][ T9547] ? preempt_schedule_common+0x5e/0xc0 [ 222.054142][ T9547] ? get_block+0x635/0x1380 [ 222.054142][ T9547] ? get_block+0x635/0x1380 [ 222.054142][ T9547] ? preempt_schedule_thunk+0x16/0x18 [ 222.054142][ T9547] ? trace_hardirqs_on+0x55/0x230 [ 222.054142][ T9547] ? get_block+0x635/0x1380 [ 222.054142][ T9547] ? get_block+0x635/0x1380 [ 222.054142][ T9547] end_report+0x4d/0x53 [ 222.054142][ T9547] kasan_report.cold+0xd/0x37 [ 222.054142][ T9547] ? get_block+0x635/0x1380 [ 222.054142][ T9547] check_memory_region+0x141/0x190 [ 222.054142][ T9547] get_block+0x635/0x1380 [ 222.054142][ T9547] ? block_to_path.isra.0+0x300/0x300 [ 222.054142][ T9547] ? touch_buffer+0x330/0x330 [ 222.054142][ T9547] ? create_empty_buffers+0x5b8/0x8c0 [ 222.054142][ T9547] ? do_raw_spin_unlock+0x171/0x260 [ 222.054142][ T9547] minix_get_block+0xe5/0x110 [ 222.054142][ T9547] __block_write_begin_int+0x490/0x1b20 [ 222.054142][ T9547] ? minix_rename+0x8c0/0x8c0 [ 222.054142][ T9547] ? remove_inode_buffers+0x1c0/0x1c0 [ 222.054142][ T9547] ? pagecache_get_page+0x204/0xa10 [ 222.054142][ T9547] ? balance_dirty_pages_ratelimited+0x160/0x1d50 [ 222.054142][ T9547] ? wait_for_stable_page+0x11c/0x1e0 [ 222.054142][ T9547] ? minix_rename+0x8c0/0x8c0 [ 222.054142][ T9547] block_write_begin+0x58/0x2e0 [ 222.054142][ T9547] minix_write_begin+0x35/0xe0 [ 222.054142][ T9547] generic_perform_write+0x20a/0x4e0 [ 222.054142][ T9547] ? trace_event_raw_event_file_check_and_advance_wb_err+0x4a0/0x4a0 [ 222.054142][ T9547] ? update_time+0xc0/0xc0 [ 222.054142][ T9547] ? down_write+0xdb/0x150 [ 222.054142][ T9547] __generic_file_write_iter+0x24c/0x610 [ 222.054142][ T9547] generic_file_write_iter+0x3f3/0x630 [ 222.054142][ T9547] ? __generic_file_write_iter+0x610/0x610 [ 222.054142][ T9547] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 222.054142][ T9547] ? find_held_lock+0x2d/0x110 [ 222.054142][ T9547] new_sync_write+0x426/0x650 [ 222.054142][ T9547] ? new_sync_read+0x6d0/0x6d0 [ 222.054142][ T9547] ? debug_smp_processor_id+0x2f/0x185 [ 222.054142][ T9547] ? rcu_read_lock_any_held+0xcd/0xf0 [ 222.054142][ T9547] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 222.948389][ T9547] __vfs_write+0xc9/0x100 [ 222.948389][ T9547] vfs_write+0x268/0x5d0 [ 222.948389][ T9547] ksys_write+0x12d/0x250 [ 222.948389][ T9547] ? __ia32_sys_read+0xb0/0xb0 [ 222.948389][ T9547] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 222.948389][ T9547] ? do_syscall_64+0x21/0x7d0 [ 222.948389][ T9547] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 222.948389][ T9547] do_syscall_64+0xf6/0x7d0 [ 222.948389][ T9547] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 222.948389][ T9547] RIP: 0033:0x43e919 [ 222.948389][ T9547] Code: bd 91 fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 8b 91 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 222.948389][ T9547] RSP: 002b:00007fcaef905ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 222.948389][ T9547] RAX: ffffffffffffffda RBX: 00000000006c3c48 RCX: 000000000043e919 [ 222.948389][ T9547] RDX: 000000000000fdef RSI: 00000000200002c0 RDI: 0000000000000008 [ 222.948389][ T9547] RBP: 00000000006c3c40 R08: 0000000000000000 R09: 0000000000000000 [ 222.948389][ T9547] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006c3c4c [ 222.948389][ T9547] R13: 00007ffea77dfeef R14: 00007fcaef8e6000 R15: 0000000000000003 [ 222.948389][ T9547] Kernel Offset: disabled [ 222.948389][ T9547] Rebooting in 86400 seconds..