MINIX-fs: mounting unchecked file system, running fsck is recommended xt_SECMARK: only valid in 'mangle' or 'security' table, not 'raw' SELinux: unrecognized netlink message: protocol=0 nlmsg_type=43 sclass=netlink_route_socket pig=461 comm=syz-executor.4 device 937 entered promiscuous mode BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 PGD 21898f067 P4D 21898f067 PUD 21970b067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 462 Comm: syz-executor.4 Not tainted 4.19.114-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:test_and_set_bit arch/x86/include/asm/bitops.h:209 [inline] RIP: 0010:test_and_set_bit_lock arch/x86/include/asm/bitops.h:223 [inline] RIP: 0010:trylock_buffer include/linux/buffer_head.h:359 [inline] RIP: 0010:lock_buffer include/linux/buffer_head.h:365 [inline] RIP: 0010:alloc_branch fs/minix/itree_common.c:88 [inline] RIP: 0010:get_block+0x76c/0x1300 fs/minix/itree_common.c:191 Code: 00 00 49 8b bc 24 28 01 00 00 b9 08 00 00 00 e8 fa 42 bc ff 31 d2 be 6c 01 00 00 48 c7 c7 60 48 7c 87 49 89 c4 e8 f4 64 4e ff 49 0f ba 2c 24 02 40 0f 92 c6 31 ff 40 88 74 24 78 e8 dd 0d 6f RSP: 0018:ffff88821481f788 EFLAGS: 00010246 RAX: 0000000000000007 RBX: ffff88821481f888 RCX: 1ffffffff11f89f8 RDX: 0000000000000000 RSI: ffffffff88b92960 RDI: ffff888216128124 RBP: ffff88821481f920 R08: ffff888216128100 R09: fffff94001034277 R10: fffff94001034276 R11: ffffea00081a13b7 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88821481f84c R15: 0000000000000c98 FS: 00007fa556f0c700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000216af8000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: minix_get_block+0xe5/0x110 fs/minix/inode.c:379 __block_write_begin_int+0x480/0x17a0 fs/buffer.c:1967 __block_write_begin fs/buffer.c:2017 [inline] block_write_begin+0x58/0x2e0 fs/buffer.c:2076 minix_write_begin+0x35/0xe0 fs/minix/inode.c:415 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3162 __generic_file_write_iter+0x24c/0x610 mm/filemap.c:3287 generic_file_write_iter+0x37f/0x729 mm/filemap.c:3315 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x512/0x760 fs/read_write.c:487 vfs_write+0x206/0x550 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c879 Code: ad b6 fb 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa556f0bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fa556f0c6d4 RCX: 000000000045c879 RDX: 000000000076656f RSI: 00000000200009c0 RDI: 0000000000000008 RBP: 000000000076c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000ce4 R14: 00000000004cf0b1 R15: 000000000076c0ec Modules linked in: CR2: 0000000000000000 ---[ end trace e91c51bc07d5fad7 ]--- RIP: 0010:test_and_set_bit arch/x86/include/asm/bitops.h:209 [inline] RIP: 0010:test_and_set_bit_lock arch/x86/include/asm/bitops.h:223 [inline] RIP: 0010:trylock_buffer include/linux/buffer_head.h:359 [inline] RIP: 0010:lock_buffer include/linux/buffer_head.h:365 [inline] RIP: 0010:alloc_branch fs/minix/itree_common.c:88 [inline] RIP: 0010:get_block+0x76c/0x1300 fs/minix/itree_common.c:191 Code: 00 00 49 8b bc 24 28 01 00 00 b9 08 00 00 00 e8 fa 42 bc ff 31 d2 be 6c 01 00 00 48 c7 c7 60 48 7c 87 49 89 c4 e8 f4 64 4e ff 49 0f ba 2c 24 02 40 0f 92 c6 31 ff 40 88 74 24 78 e8 dd 0d 6f SELinux: unrecognized netlink message: protocol=0 nlmsg_type=52354 sclass=netlink_route_socket pig=468 comm=syz-executor.0 netlink: 'syz-executor.1': attribute type 2 has an invalid length. RSP: 0018:ffff88821481f788 EFLAGS: 00010246 device 938 entered promiscuous mode RAX: 0000000000000007 RBX: ffff88821481f888 RCX: 1ffffffff11f89f8 RDX: 0000000000000000 RSI: ffffffff88b92960 RDI: ffff888216128124 RBP: ffff88821481f920 R08: ffff888216128100 R09: fffff94001034277 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=43 sclass=netlink_route_socket pig=479 comm=syz-executor.4 R10: fffff94001034276 R11: ffffea00081a13b7 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88821481f84c R15: 0000000000000c98 netlink: 'syz-executor.1': attribute type 2 has an invalid length. FS: 00007fa556f0c700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e3529fa920 CR3: 0000000216af8000 CR4: 00000000001406f0 device 939 entered promiscuous mode DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 netlink: 'syz-executor.1': attribute type 2 has an invalid length.